Fixed checkstyle errors

src/main/java/array/ArrayModeSnippet.java

@@ -28,18 +28,23 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-
 /**
  * ArrayModeSnippet.
  */
+
 public class ArrayModeSnippet {
 
-  /** Returns the mode of the array and if multiple modes exists it returns them. */
+  /**
+   * Private constructor to prevent instantiation.
+   */
   private ArrayModeSnippet() {
     throw new IllegalStateException("Utility class");
   }
-  /** The function that calculates the mode. */
 
+  /**
+   * Returns the mode(s) of the array.
+   * If multiple modes exist, it returns them in a list.
+   */
   public static List<Integer> modeArray(int[] arr) {
     int maxCount = 0;
     HashMap<Integer, Integer> frequencyMap = new HashMap<>();
@@ -56,4 +61,3 @@ public static List<Integer> modeArray(int[] arr) {
     return modes;
   }
 }
-

src/test/java/array/ArrayModeSnippetTest.java

@@ -26,17 +26,16 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
-import org.junit.jupiter.api.Test;
-
 import java.util.List;
+import org.junit.jupiter.api.Test;
 
 /**
  * Tests for 30 Seconds of Java code library.
  */
 class ArrayModeSnippetTest {
   /**
-  * Test for {@link ArrayModeSnippet #ArrayModeSnippet(int[])}.
-  */
+   * Test for {@link ArrayModeSnippet #ArrayModeSnippet(int[])}.
+   */
   @Test
   void testModeArray() {
     assertEquals(List.of(2), ArrayModeSnippet.modeArray(new int[]{1, 2, 2, 3}));
@@ -45,4 +44,4 @@ void testModeArray() {
     assertEquals(List.of(), ArrayModeSnippet.modeArray(new int[]{}));
     assertEquals(List.of(-1, -2), ArrayModeSnippet.modeArray(new int[]{-1, -1, -2, -2, -3}));
   }
-}
+}